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1; Test 64-bit floating-point subtraction.2;3; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 \4; RUN: | FileCheck -check-prefix=CHECK -check-prefix=CHECK-SCALAR %s5; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s6 7declare double @foo()8 9; Check register subtraction.10define double @f1(double %f1, double %f2) {11; CHECK-LABEL: f1:12; CHECK: sdbr %f0, %f213; CHECK: br %r1414 %res = fsub double %f1, %f215 ret double %res16}17 18; Check the low end of the SDB range.19define double @f2(double %f1, ptr %ptr) {20; CHECK-LABEL: f2:21; CHECK: sdb %f0, 0(%r2)22; CHECK: br %r1423 %f2 = load double, ptr %ptr24 %res = fsub double %f1, %f225 ret double %res26}27 28; Check the high end of the aligned SDB range.29define double @f3(double %f1, ptr %base) {30; CHECK-LABEL: f3:31; CHECK: sdb %f0, 4088(%r2)32; CHECK: br %r1433 %ptr = getelementptr double, ptr %base, i64 51134 %f2 = load double, ptr %ptr35 %res = fsub double %f1, %f236 ret double %res37}38 39; Check the next doubleword up, which needs separate address logic.40; Other sequences besides this one would be OK.41define double @f4(double %f1, ptr %base) {42; CHECK-LABEL: f4:43; CHECK: aghi %r2, 409644; CHECK: sdb %f0, 0(%r2)45; CHECK: br %r1446 %ptr = getelementptr double, ptr %base, i64 51247 %f2 = load double, ptr %ptr48 %res = fsub double %f1, %f249 ret double %res50}51 52; Check negative displacements, which also need separate address logic.53define double @f5(double %f1, ptr %base) {54; CHECK-LABEL: f5:55; CHECK: aghi %r2, -856; CHECK: sdb %f0, 0(%r2)57; CHECK: br %r1458 %ptr = getelementptr double, ptr %base, i64 -159 %f2 = load double, ptr %ptr60 %res = fsub double %f1, %f261 ret double %res62}63 64; Check that SDB allows indices.65define double @f6(double %f1, ptr %base, i64 %index) {66; CHECK-LABEL: f6:67; CHECK: sllg %r1, %r3, 368; CHECK: sdb %f0, 800(%r1,%r2)69; CHECK: br %r1470 %ptr1 = getelementptr double, ptr %base, i64 %index71 %ptr2 = getelementptr double, ptr %ptr1, i64 10072 %f2 = load double, ptr %ptr273 %res = fsub double %f1, %f274 ret double %res75}76 77; Check that subtractions of spilled values can use SDB rather than SDBR.78define double @f7(ptr %ptr0) {79; CHECK-LABEL: f7:80; CHECK: brasl %r14, foo@PLT81; CHECK-SCALAR: sdb %f0, 16{{[04]}}(%r15)82; CHECK: br %r1483 %ptr1 = getelementptr double, ptr %ptr0, i64 284 %ptr2 = getelementptr double, ptr %ptr0, i64 485 %ptr3 = getelementptr double, ptr %ptr0, i64 686 %ptr4 = getelementptr double, ptr %ptr0, i64 887 %ptr5 = getelementptr double, ptr %ptr0, i64 1088 %ptr6 = getelementptr double, ptr %ptr0, i64 1289 %ptr7 = getelementptr double, ptr %ptr0, i64 1490 %ptr8 = getelementptr double, ptr %ptr0, i64 1691 %ptr9 = getelementptr double, ptr %ptr0, i64 1892 %ptr10 = getelementptr double, ptr %ptr0, i64 2093 94 %val0 = load double, ptr %ptr095 %val1 = load double, ptr %ptr196 %val2 = load double, ptr %ptr297 %val3 = load double, ptr %ptr398 %val4 = load double, ptr %ptr499 %val5 = load double, ptr %ptr5100 %val6 = load double, ptr %ptr6101 %val7 = load double, ptr %ptr7102 %val8 = load double, ptr %ptr8103 %val9 = load double, ptr %ptr9104 %val10 = load double, ptr %ptr10105 106 %ret = call double @foo()107 108 %sub0 = fsub double %ret, %val0109 %sub1 = fsub double %sub0, %val1110 %sub2 = fsub double %sub1, %val2111 %sub3 = fsub double %sub2, %val3112 %sub4 = fsub double %sub3, %val4113 %sub5 = fsub double %sub4, %val5114 %sub6 = fsub double %sub5, %val6115 %sub7 = fsub double %sub6, %val7116 %sub8 = fsub double %sub7, %val8117 %sub9 = fsub double %sub8, %val9118 %sub10 = fsub double %sub9, %val10119 120 ret double %sub10121}122 123; Check that reassociation flags do not get in the way of SDB.124define double @f8(ptr %x) {125; CHECK-LABEL: f8:126; CHECK: ld %f0127; CHECK: sdb %f0128; CHECK: br %r14129entry:130 %0 = load double, ptr %x, align 8131 %arrayidx1 = getelementptr inbounds double, ptr %x, i64 1132 %1 = load double, ptr %arrayidx1, align 8133 %add = fsub reassoc nsz arcp contract afn double %1, %0134 ret double %add135}136